公开(公告)号：US11417151B2

公开(公告)日：2022-08-16

申请号：US16722499

申请日：2019-12-20

Applicant: Advanced Micro Devices, Inc.

Inventor： Chang-Che Tsai ,  Chih-Wei Li ,  Po-Min Wang ,  Yang Wang

IPC: G06K9/00 ,  H04N5/353 ,  G06V40/40 ,  G06V40/16

Abstract: A processing device comprises a memory configured to store data and a processor. The processor is configured to control an exposure timing of a rolling shutter image sensor and an IR illumination timing of an object, by an IR light emitter, by switching between a first operation mode and a second operation mode. In the first operation mode, a sequence of video frames, each having a plurality of pixel lines, comprises a frame in which each pixel line is exposed to IR light emitted by the IR light emitter; a frame which is partially exposed to the IR light and a frame in which no pixel line is exposed to the IR light. In the second operation mode, alternating video frames of the sequence comprise one of a frame in which each pixel line is exposed to the IR light and a frame in which no pixel line is exposed to the IR light.

公开(公告)号：US20210182582A1

公开(公告)日：2021-06-17

申请号：US16722499

申请日：2019-12-20

Applicant: Advanced Micro Devices, Inc.

Inventor： Chang-Che Tsai ,  Chih-Wei Li ,  Po-Min Wang ,  Yang Wang

IPC: G06K9/00 ,  H04N5/353

Abstract: A processing device comprises a memory configured to store data and a processor. The processor is configured to control an exposure timing of a rolling shutter image sensor and an IR illumination timing of an object, by an IR light emitter, by switching between a first operation mode and a second operation mode. In the first operation mode, a sequence of video frames, each having a plurality of pixel lines, comprises a frame in which each pixel line is exposed to IR light emitted by the IR light emitter; a frame which is partially exposed to the IR light and a frame in which no pixel line is exposed to the IR light. In the second operation mode, alternating video frames of the sequence comprise one of a frame in which each pixel line is exposed to the IR light and a frame in which no pixel line is exposed to the IR light.